Pertti Palo

Vowel formants from the wave equation

This article describes modal analysis of acoustic waves in the human vocal tract while the subject is pronouncing [o]. The model used is the wave equation in three dimensions, together with physically relevant boundary conditions. The geometry is reconstructed from anatomical MRI data obtained by other researchers. The computations are carried out using the finite element method. The model is validated by comparing the computed modes with measured data.

Recording Speech during MRI : Part II

We design and construct a recording arrangement for speech during an MRI scan of the speakers vocal tract. We concentrate on the acoustic environment around the test subject inside the MRI machine. The data thus obtained is used for construction and validation of a numerical model of the vocal tract.

Recording speech during magnetic resonance imaging

We discuss recording arrangements for speech during an MRI scan of the speakers vocal tract. The image and sound data thus obtained will be used for construction and validation of a numerical model for the vocal tract.